Records of mammals from the East Tavaputs Plateau, Utah

… paleontology in Utah, 1999

A survey of The Nature Conservancy's Four Canyon Preserve in Ellis County, Oklahoma, was conducted from June 2005 to April 2006 to determine what species of mammals occur in the preserve. Sherman live traps were used to trap small mammals and reliable sight records documented large mammals. Mist nets and gopher traps were set to sample for bats and gophers, respectively. A literature search identified historical accounts of mam-mals and those species that might eventually be found to occur in the preserve. Compiled in this inventory is an annotated list of the 33 extant species of mammals that presently occur on the Four Canyon Preserve. Also listed are 4 introduced species, 9 species that probably occurred in the preserve historically and 24 species that might be found to oc-cur. © 2010 Oklahoma Academy of Science.

1975

2004

1999

New Mexico Museum of Natural History and Science Bulletin, 2024

Dr. Martin G. Lockley explored and published extensively on vertebrate ichnological resources at Glen Canyon National Recreation Area (GLCA), primarily from the shores of Lake Powell in Utah and Arizona. Since 2010, a team from the St. George Dinosaur Discovery Site, working in conjunction with GLCA and National Park Service paleontologists, has focused research primarily on specific vertebrate tracksites in the Lower Jurassic Glen Canyon Group, especially in the Kayenta Formation and Navajo Sandstone. In the process, several significant body fossil sites have been discovered in the Upper Triassic Chinle Formation that have produced plants, fishes, and archosaurian reptiles. Additionally, two tritylodont bonebeds have been discovered, one each in the uppermost Kayenta Formation and lower Navajo Sandstone. As recognized by Lockley, GLCA, and NPS, the paleontological resources within GLCA park boundaries are extensive, ranging from the Pennsylvanian to Late Cretaceous, and the Pleistocene. Here, we summarize the major fossil localities studied at GLCA in the last decade and also report on the first occurrences of these trace fossils from GLCA (in geologic order): cf. Psammichnites from the lower Cutler beds; cf. Oravaichnium, Scoyenia, and cf. Gwyneddichnium from the Shinarump Member of the Chinle Formation; Evazoum gatewayensis, cf. Evazoum, and Brachychirotherium from the lower Wingate Sandstone; Undichna, cf. Ameghinichnus, and cf. Rhynchosauroides from the Kayenta Formation; a large Eubrontes crouching trace with possible manus prints from the Kayenta–Navajo transition, the ninth known example worldwide and second from GLCA; and Navahopus tracks from the Navajo Sandstone. We also report on locally abundant Grallator tracks in the upper part of the Navajo Sandstone.

Occasional Papers of the Museum at Texas Tech University, 1987

For more than a century, naturalists and others interested in the fauna and flora of north-central Texas have provided information about the wildlife and vegetation there. Captain Randolph B. Marcy, who led several expeditions to the area in the 1850s, provided early information on natural history of the region in his various reports (Marcy and McClellan, 1853, 1854; Marcy, 1856, 1874). Additional government surveys were carried out in the region in 1876 (Baker, 1985). Information on the mammals of north-central Texas was provided in the works by Bailey (1905), Davis (1974), and Hall (1981). Specific treatments of mammals of the area were contributed by Dalquest (1968) and Dalquest and Horner (1984). The purposes of this report are to present some additional information on the mammals of north-central Texas and to make known to science the existence of additional specimens of mammals from the area heretofore unreported in the literature. Methods and Materials Specimens of mammals reported herein were obtained by us during more than two decades of periodic visits to north-central Texas. These specimens were assembled in order to document geographic and ecologic distribution of mammals in connection with a wide array of teaching and research activities. Mammals were collected by hand, snap traps, live traps, mist nets, hand nets, and guns. Some specimens found dead on roads were

Monographs of the Western North American Naturalist, 2008

2021

A study of the mammals of the Gila region of New Mexico was conducted from 2012 through 2020, with 2,919 voucher specimens collected through fieldwork and collaborations with commercial trappers, in addition to data from camera traps, review of major holdings at 46 museums (n = 12,505 georeferenced specimens), and literature review. Specimens cover a 170-year span, dating back to 1850 and were unevenly distributed spatially and temporally across the Gila region. Most areas were very poorly represented and when summed across all mammal species, ranged from 0.02 to 3.7 specimens per km2. The survey documented 108 species (104 now extant) for the region. High species richness, greater than that reported for 38 states in the United States, is likely due to the juxtaposition of multiple biomes in the Gila, including the Sonoran, Chihuahuan, and Great Basin deserts, the Rocky Mountains and Sierra Madre Occidental, and nearby “sky islands’’ of the Southwest. Two species, Leptonycteris...

Biological conservation depends on understanding and disentangling the effects of decadal-to centennial-scale dynamics from the millennial-scale dynamics documented in the fossil record. The American Southwest is expected to become increasingly arid over the next few decades and will continue to experience large-scale human land use in various forms. A primary question is whether the ecological fluctuations recorded over the past few decades fall outside the range of variation expected in the absence of recent land use and management. I excavated and quantified mammal diversity change in two fossil-bearing alcoves, East Canyon Rims 2 and Rone Bailey Alcove, located in San Juan County, Utah. AMS radiocarbon dates on 33 bone samples from these sites span ~4.4-0.5 kyr and shed light on pre-industrial faunal dynamics in the region over the course of environmental change. Localities with comparable small mammal diversity have not been reported from this region previously, so these deposits provide novel insight into Holocene mammal diversity in southeastern Utah. Taxa recorded in these sites include leporids, sciurids, perognathines, arvicolines, Onychomys, Cynomys, Dipodomys, Peromyscus, Neotoma, and Thomomys. Using temporal cross-correlation, I tested for a relationship between regional temperature and species richness, evenness, relative abundance, and rank abundance. I also tested for changes in the overall taxon abundance distribution and visualized faunal relationships among time bins using non-metric multidimensional scaling of relative abundance data. None of the measures of diversity tested here were correlated with temperature change through time except for relative abundance of leporids. Overall, these results suggest that climatic fluctuations of the magnitude preserved in these deposits did not significantly alter the small mammal community, nor is there evidence that the presence, then exodus, of Native Americans from the region significantly affected small mammals.

and Duvall 1955, and Aldrich 1963). However, our study of the known specimens reveals that the New Mexico population was a distinct and undescribed subspecies, which diminished in numbers until presumably absorbed by an introduced population of jarnesi in the early 1950s. Since then, the species has entirely died out in the state, with the last specific report having been in 1954 ). Interestingly, Ridgway (1884) did not cite New Mexico in describing campestris, which he attributed to Illinois, the Dakotas, Nebraska, and the eastern parts of Montana, Wyoming, and Colorado. However, he later expanded this taxon's range to include eastern New Mexico (Ridgway 1887). Subsequently, the A.O.U. (1910) omitted New Mexico from the range of this species, as did Lincoln (1917) in his description of T. p. jamesi (type locality: 3 miles [5 km] west of Castle Rock, Douglas Co., Colorado).

2008

We report new locality records for 23 species of mammals from western Oklahoma collected during spring and summer 2005, 2006, and 2007. Of these records, four constitute range extensions for the documented distributions of these species in Oklahoma (Scalopus aquaticus, Microtus pinetorum, Neotoma floridana, Reithrodontomys fulvescens) and one is a range extension for North America (Baiomys taylori). Specimens were collected as part of a survey of 14 western Oklahoma Wildlife Management Areas. These records enhance our understanding of the distribution and natural history of mammalian fauna on the southern Great Plains.